[asterisk-dev] Storing Voicemail messages in multiple formats ...

sushma gupta guptasus at gmail.com
Thu Jan 17 20:46:04 CST 2008

Hi Asterisk-Gurus

I am trying to port the asterisk voicemail in an embedded linux
environment.  I want to store the voicemessages in 3 formats (G726, ALAW,
ULAW and possibly G729 in future).  This option is available in the Asterisk
voicemail, however I want to store the message in any one of the above
format(in a file) and transcode or convert in to other formats i.e. to other
files at a later stage due to MIPS constraints.  Hence below are the
question and I will much grateful if u can answer my below questions:

1.  How to go a head with this i.e. converting one file in to other files of
different formats?
2.  I see in the conversion/transcoding is done at the time of recording, so
I want to schedule a idle thread to do the conversion, in this case how can
I convert from like alaw <=> ulaw,  alaw<=>G726, alaw <=>G729 etc

I am new to codecs or compression technologies with no electronics
background, please help me in this matter.

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